Greycliff, MT Weather & Growing Conditions
Overnight
44°F
Mostly Clear
Mostly clear, with a low around 44. South wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Mostly Clear | 1 mph S | 0% |
| Tuesday | 75°F | Sunny then Patchy Smoke | 1 to 8 mph E | 0% |
| Tuesday Night | 49°F | Patchy Smoke then Mostly Clear | 2 to 8 mph S | 1% |
| Wednesday | 87°F | Sunny | 3 to 14 mph WNW | 0% |
| Wednesday Night | 54°F | Mostly Clear | 3 to 12 mph WNW | 0% |
| Thursday | 95°F | Sunny | 2 to 17 mph W | 0% |
| Thursday Night | 58°F | Mostly Clear | 2 to 17 mph WNW | 0% |
| Friday | 100°F | Sunny | 2 to 15 mph W | 0% |
| Friday Night | 61°F | Mostly Clear | 6 to 20 mph WNW | 0% |
| Saturday | 96°F | Sunny | 7 to 20 mph WNW | 0% |
| Saturday Night | 61°F | Partly Cloudy | 2 to 18 mph NW | 2% |
| Sunday | 94°F | Sunny | 3 to 9 mph N | 3% |
| Sunday Night | 60°F | Partly Cloudy | 3 to 13 mph N | 11% |
| Monday | 91°F | Sunny | 3 to 10 mph N | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Greycliff, MT
Last spring frost
May 14
First fall frost
Sep 26
Growing season
133 days
Hardiness zone
5a
Explore more for Greycliff, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Big Timber, Mt (12.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.